IDIOPHONES - Instruments made of naturally sonorous material not needing additional tension to create sound. e.g. (1) STRUCK; triangle, gong, bell; (2) SHAKEN; rattle; (3) PLUCKED; Jew's harp; (4) RUBBED; glass harmonica.

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idiophone made of naturally sonorous material
idiophone has category shaken
idiophone has category struck
idiophone has category plucked
idiophone has category rubbed
idiophone is category (World music) of instruments